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-   -   Adjustable octave warble tone generator (http://www.diyaudio.com/forums/everything-else/149613-adjustable-octave-warble-tone-generator.html)

percy 25th August 2009 08:56 PM

Adjustable octave warble tone generator
 
Does anyone of a (free) software tone generator that will let me select not just the frequency of the warble tone but also how many octaves. Typically its 1/3 octave, but I'd like to use smaller octaves like 1/6th, 1/24th...

jan.didden 25th August 2009 09:15 PM

Quote:

Originally Posted by percy (Post 1906907)
Does anyone of a (free) software tone generator that will let me select not just the frequency of the warble tone but also how many octaves. Typically its 1/3 octave, but I'd like to use smaller octaves like 1/6th, 1/24th...

Do you know the Crawford Warble Oscillator published in Audio Amateur (many) years ago? Hardware....

jd

percy 26th August 2009 02:32 AM

No I dont, but I googled it up and found a couple of references. It was published in AudioXpress in '79, by Dick Crawford. http://www.audioxpress.com/bksprods/products/pcbk-3.htm

Is this the one ?

I wish there was some more additional information available. What kind of octave spread adjustment does it have ?

While searching for this I also happened to run into another interesting device made by the same author - http://www.audioxpress.com/bksprods/products/pcbc-6.htm .

percy 27th August 2009 07:08 PM

Speaker Workshop !
 
1 Attachment(s)
Speaker Workshop to the rescue!
good ol' SW has a signal generator that can do warble tones and will let you adjust the range!

jan.didden 27th August 2009 08:30 PM

Quote:

Originally Posted by percy (Post 1908453)
Speaker Workshop to the rescue!
good ol' SW has a signal generator that can do warble tones and will let you adjust the range!

OK, I was going to dig out my AA's but it seems you've served well already!

jd

dangus 1st September 2009 08:30 AM

Burn a CD with warble tones, generated with Cooledit or something? Or there's some test CDs that have warble tones or band-limited pink noise. Denon Audio Technical CD, for one. If it's out of print, evil people may have shared it as a torrent or something. There's some freeware audio test CDs too.

If you burn them as MP3s, an MP3 player would display the name (so you wouldn't need to count tracks on a CD player). A small (32M) (obsolete) flash player should be more than enough space.

Dave Jones 3rd December 2010 01:03 PM

Quote:

Originally Posted by percy (Post 1908453)
Speaker Workshop to the rescue!
good ol' SW has a signal generator that can do warble tones and will let you adjust the range!

How does one bring up that dialog? I looked at the help page for it. It does not say how to navigate to it.

Thankee.

Edit: I figured out how to make the dialog come up. Now how do I play the tone? The "Apply" button is grayed out, BTW.

Dave Jones 3rd December 2010 01:44 PM

Trying to get Speaker Workshop to generate a warble tone. Here's what I've done:

1. I go, "Resource/New/Signal" and create a new signal. It shows up in the project, but it contains a default signal, a sine wave.

2. I click on the signal resource in the project window, and click on the "Edit properties" button.

3. The advertised dialog comes up, but when I click on the "Warble" tab, the "Apply" button is grayed out, so I cannot change the signal to a warble tone.

4. I scratch and cuss.

LAJ 3rd December 2010 04:00 PM

I built a step-tone generator several years ago. It uses the XR2206 whose frequency control pin is select different resistances (pots) via a cmos multiplexer driven by a counter and a 1 Hz clock. Each of 8 tones is on for 1 sec and then repeats.


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